AH Architecture
Chartered Architecture · London & Nationwide

Services & fees

Clearscope.Nosurprises.

From a free first conversation to a finished building, every service is built to reduce your risk and get you to a clear, approved, buildable result.

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Feasibility Sprint

£2,500

Fixed fee · 2 to 3 weeks · payable on engagement

For homeowners who want to know whether their idea works before committing to a full design. We carry out a site visit, a planning review, and a sketch-level study, and deliver a written feasibility report.

Included

  • Site visit and measured survey
  • Planning history and constraints review
  • Sketch-level design study
  • Build-cost order of magnitude
  • Written feasibility report with recommendation
  • Credit applied to next tier if you proceed
Start with feasibility

Most common

Planning Package

£6,500 to £12,000

Fixed fee · 6 to 12 weeks · 50% on engagement, 50% on submission

The full planning route. We design the scheme, produce the application drawings, write the supporting statements, submit to the local authority, and manage the case-officer relationship to determination.

Included

  • Concept design through to planning-stage drawings
  • Design and access statement
  • Heritage statement where required
  • Application submission and case-officer liaison
  • Two rounds of design revision included
  • Permitted-development route when applicable
Book a planning call

Full project

Design and Tender

From £18,000

Fixed fee on scope · staged invoicing aligned with RIBA work stages

Everything from concept to contractor selection. Planning, building regulations, structural calculations, tender pack, and contractor liaison up to start on site. Optional construction-stage observation.

Included

  • Everything in the Planning Package
  • Building regulations submission
  • Structural calculations or coordination with structural engineer
  • Party-wall scope and surveyor coordination
  • Tender pack and contractor shortlist
  • Contract administration on request
Quote the full job

Full taxonomy

Everything we offer.

Inside the three productized tiers above, or as standalone instructions.

  • Planning permission

    Full planning applications for extensions, conversions, and change of use. We design around the local plan and the officer who will assess your application.

  • Householder applications

    Rear, side, wraparound, and double-storey extensions. Determined under the 8-week statutory householder period.

  • Loft conversions

    Hip-to-gable, mansard, dormer, and L-shaped layouts. Under permitted development where the rules allow, full planning where they do not.

  • Basement conversions

    Cellars to habitable space, plus light wells and ventilation strategies. We coordinate structural and waterproofing design.

  • Listed buildings and conservation

    Listed building consent for Victorian, Georgian, and locally listed buildings. Conservation-area scrutiny built into the design from day one.

  • Places of worship

    Mosques, churches, prayer halls, community halls, and ablution facilities. Use class, parking, capacity, and acoustic strategies woven into the application.

  • New builds

    Replacement dwellings, infill plots, and small commercial new builds. Pre-application advice often de-risks the route before drawings.

  • Structural calculations

    Civil and structural engineering for the work we design. Coordination with named structural engineers for larger frames.

  • Party walls

    Scope and coordination of party wall awards with adjoining owners. Surveyor liaison for both sides of the wall.

  • Planning appeals

    When an application is refused, we write the appeal statement and present the case to the Planning Inspectorate.

Not sure which one fits?

Send a brief or book a free 30-minute call. our team will tell you which tier matches your project, what the planning likelihood looks like, and what the realistic timeline is.